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			h1 { color: red }     /**************descendant selecters************8*/
			em { color: red }
			h1 em { color: blue } /* em 테그가 h1 하위에 있을시 나란히 써줌 em테그에 적용됨*/
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    <h1>This <span class="myclass">headline 
is <em>very</em> important</span></h1>
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